V61167 Commercial VA20 35 VG20 35 DCV
V61167 Commercial VA20 35 VG20 35 DCV
V61167 Commercial VA20 35 VG20 35 DCV
TM
TM
VA/VG
Valve Service
Manual
Commercial Hydraulics
373 Meuse Argonne
Hicksville, Ohio 43526
(419) 542-6611
FAX (419) 542-8871
VA 20 / 35
VG 20 / 35
COMMERCIAL
INTERTECH
Directional Control Valves
Service Manual
Table of Contents
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Exploded View of Work Section . . . . . . . . . . . . . . . . . 2
Parts List for Work Section. . . . . . . . . . . . . . . . . . .. . . 3
Valve Disassembly Instructions .. . . . . . . . . . . . . . . . 4
Valve Assembly Instructions . . . . . . . . . . . . . . . . . . . . 7
Cutaway for VA/VG Remote Control Operators . . . . 11
Remote Control Operator Disassembly . . . . . . . . . . . 12
Remote Control Operator Assembly . . . . . . . . . . . . . 14
Cutaway for Pneumatic Control Operators . . . . . . . 16
Pneumatic Section Disassembly . . . . . . . . . . . . . . . . 17
Pneumatic Section Assembly . . . . . . . . . . . . . . . . . . .19
Cutaways for Main Relief Valves . . . . . . . . . . . . . . . 22
Cutaways for Port Relief Valves . . . . . . . . . . . . . . . . 23
Screw Adjusted R/V Pressure Adjustments . . . . . . . 24
DVA20, DVG20, VA20, VG20 Valve Seal Kits . . . . . . 25
DVA35, DVG35, VA35, VG35 Valve Seal Kits. . . . . . . 26
DVG80, VG80 Valve Seal Kits . . . . . . . . . . . . . . . . . . 27
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
1
VA™/VG™ Valve Service Instructions
4A
5
4
Figure 1
4A
“Lo-Boy” 6
Work Section
Spool Assembly
7
8
8
7
1
6
14
2 (3 not shown)
16
9
15
13 1
16
12
10 18
11
Spool
19
17
20
21
18
Figure 2
3
Parts List For Work Section
Item Description Qty. VA/VG20 Part No. VA/VG35 Part No. VG80 Part No.
Detent Spool
The detent assembly should not be removed from the
spool unless these parts need to be replaced. Wrap the
detent sleeve (item 17, fig. 2) with a clean rag. Grip
the rag covered sleeve and pull firmly. As the sleeve
moves backwards, the detent balls (item 18, fig. 2)
and the detent spring (item 19 , fig. 2) will pop free.
The rag should capture these parts and prevent their
loss.
Next, clamp the spool in a soft jawed vise and remove
the detent poppet retainer (item 20, fig. 2), placing an
undersized bar through the detent ball bore can serve
as a wrench. Lightly tapping the detent poppet retainer
with a hammer and a punch can break the adhesive.
Cautious application of heat may again be required
because an anaerobic adhesive is also used in the
detent retainer assembly.
CAUTION: Too much heat may distort the spool!
1 2 5 4 9 7 8
1 2 3 4 5 6 7
20 21 8 9 10 11 12 13 14 15 16 15 17 18 19
.
Pneumatic Section Assembly 21
2 1
1 5
4 3 SERVICE PARTS LIST - Figure 7
Item Description Qty VG80
1. O-ring 1 391-2881-342
2. Back up Ring 1 391-2681-303
3. O-ring 1 391-2881-344
4. O-ring 1 391-2881-208
Figure 6
5. Gasket Washer 1 391-1581-001
NOTE: When installing relief valve, torque to 75 ft. lbs. *Not all seals in the relief cartridge are
serviceable
5 6 3 2 1
SHIMS
Part No. Pressure
391-3782-103 502 psi
391-3782-104 122 psi
391-3782-105 40 psi
Pilot operated with anti-cavitation NOTE: When installing relief valve, torque to 75 ft. lbs.
355-9001-115
1 2 3 4
! Warning
Relief valve pressures should be set according to the original equipment
manufacturer’s specifications. Exceeding the specifications could cause a failure
in the hydraulic system or with the mechanical structure of the equipment. These
failures could cause serious personal injury or death.
25
391 1873 035 SECTION SEAL KIT (BETWEEN SECTIONS) INLET SECTIONS
391 1803 055 PARALLEL AND TANDEM
WORKSECTIONS
MIDSECTION INLET
391 1873 083 SECTION SEAL KIT (BETWEEN SECTIONS) SERIES WORKSECTIONS
391 1873 036 WORKSECTION REPAIR KIT (ALL SEALS) MANUAL, PARALLEL, AND
391 1803 457 TANDEM WORKSECTIONS
391 1873 039 MAIN RELIEF SEAL KIT 391 1873 001, 391 1873 128
391 1803 469 (ALL SERVICEABLE SEALS) 355 9107 035, 355 9001 061
391 1803 674 MAIN RELIEF PLUG SEAL KIT 391 1873 002
CONVERTIBLE OUTLET PLUG SEAL KIT
391 1873 042 SCREW ADJUSTED, PILOT OPERATED 391 1873 006, 355 9001 115
391 1803 737 PORT RELIEF VALVE WITH ANTI-CAVITATION
SEAL KIT
(ALL SERVICEABLE SEALS)
391 1823 038 PORT ACCESSORY SEAL KIT 391 1873 006, 355 9001 115
(EXTERNAL SEALS ONLY) 391 1873 007, 008, 009
355 900X 143
391 1873 010, 355 9001 164
391 1873 011, 391 2283 075
391 1873 037 SLUG ADJUSTED RELIEF VALVE KIT 391 1873 007, 008, 009
391 1823 122 (ALL SERVICEABLE SEALS) 355 900X 143
391 1873 207 PNUEMATIC END CAP SEAL KIT 391 1873 206, 391 1803 553
391 1803 387 (NEW COMMERCIAL INTERTECH DESIGN)
391 1803 694 PNUEMATIC END CAP SEAL KIT 391 1873 022, 391 1803 606
(OLD RMH DESIGN) 391 1803 767
26
391 1873 040 SECTION SEAL KIT (BETWEEN SECTIONS) INLET SECTIONS
391 1803 093 PARALLEL AND TANDEM
WORKSECTIONS
COMBINED FLOW MIDSECTION
INLETS
MIDSECTION SELECTORS
391 1803 150 SECTION SEAL KIT (BETWEEN SECTIONS) SERIES WORKSECTIONS
SPLIT FLOW MIDSECTION INLETS
391 1873 041 WORKSECTION REPAIR KIT (ALL SEALS) MANUAL, PARALLEL, AND
391 1803 722 TANDEM WORKSECTIONS
391 1823 121 WORKSECTION REPAIR KIT (ALL SEALS) MANUAL, SERIES WORKSECTIONS
391 1823 146 WORKSECTION REPAIR KIT (ALL SEALS) REMOTE, PARALLEL,
AND TANDEM WORKSECTIONS
391 1873 044 MAIN RELIEF VALVE SEAL KIT 391 1873 003, 355 9107 013
391 1803 272 (ALL SERVICEABLE SEALS) 391 1873 004, 355 9107 085
391 1873 137, 355 9107 385
391 1803 682 MAIN RELIEF VALVE PLUG SEAL KIT 391 1873 005
CONVERTIBLE OUTLET PLUG SEAL KIT
391 1873 042 SCREW ADJUSTED, PILOT OPERATED 391 1873 006, 355 9001 115
391 1803 737 PORT RELIEF VALVE WITH ANTI-CAVITATION
SEAL KIT
(ALL SERVICEABLE SEALS)
391 1823 038 PORT ACCESSORY SEAL KIT 391 1873 006, 355 9001 115
(EXTERNAL SEALS ONLY) 391 1873 007, 008, 009
355 900X 143
391 1873 010, 355 9001 164
391 1873 011, 391 2283 075
391 1873 037 SLUG ADJUSTED RELIEF VALVE KIT 391 1873 007, 008, 009
391 1823 122 (ALL SERVICEABLE SEALS) 355 900X 143
391 1873 207 PNEUMATIC ENDCAP SEAL KIT 391 1873 203, 391 1803 554
391 1803 387 (NEW COMMERCIAL INTERTECH DESIGN)
391 1803 695 PNUEMATIC ENDCAP SEAL KIT 391 1873 203, 391 1803 591
(OLD RMH DESIGN)
391 1823 121 WORK SECTION REPAIR KIT SERIES WORK SECTIONS
(ALL SEALS)
27
391 1873 160 SECTION SEAL KIT (BETWEEN SECTIONS) INLET SECTIONS
391 1803 484 ALL WORKSECTIONS
391 1873 161 WORKSECTION REPAIR KIT (ALL SEALS) MANUAL WORKSECTIONS
391 1803 594
391 1823 101 MAIN RELIEF VALVE SEAL KIT 355 9001 008, 031
(ALL SERVICEABLE SEALS)
391 1803 041 MAIN RELIEF VALVE SEAL KIT 355 9001 008, 031
(EXTERNAL SEALS)
391 1803 054 MAIN RELIEF VALVE AND PLUG SEAL KIT 391 1873 146, 391 1873 147
(EXTERNAL SEALS) 355 9001 103
391 1803 770 MAIN RELIEF VALVE SEAL KIT 391 1873 146, 355 9001 103
(ALL SERVICEABLE SEALS)
391 1873 042 SCREW ADJUSTED, PILOT OPERATED 391 1873 006, 355 9001 115
391 1803 737 PORT RELIEF VALVE WITH ANTI-CAVITATION
SEAL KIT
(ALL SERVICEABLE SEALS)
391 1823 038 PORT ACCESSORY SEAL KIT 391 1873 006, 355 9001 115
(EXTERNAL SEALS ONLY) 391 1873 011, 391 2283 075
391 1873 010, 355 9001 164